the GNU version of the Collaborative International Dictionary of English
n. The quality of being arbitrary; despoticalness; tyranny.
The Century Dictionary and Cyclopedia
n. The quality of being arbitrary.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the trait of acting unpredictably and more from whim or caprice than from reason or judgment
Word Usage
"Second, this arbitrariness is compounded by the fact that each judge narrows the field for the next round, meaning that Lois Lowry could easily be choosing between two books that say nothing at all to her."